Device for automatic firing of self-loading arms.



- S. H; BANG. DEVICE FOR AUTOMATIC .FIRING 0F SELF LOADING ARMS. APPLICATION FILED APR. 20, 1907.

901,1 43. Patented Oct. 13, 1908.

2 BEBBTB-SHEET 1.

4 fray/r519 S. H. BANG. DEVICE FOR AUTOMATIC FIRING OF SELF LOADING ARMS. APPLICATION FILED APR. 20, 1907'.

. 901 143 Patented Oct. 13, 1908.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE. soars HANSEN- BANo, or consumes, DENhfARK.

Specification of Letters Patent.

Patented Oct. 13. 1908.

Application and April so, 190:. n w n. access.-

, To all whom 'it may concern:

parts immediately be ,in which the worked by means ge r 1, the

Be itknown thatI, SoRnN HANSEN BANG,

gun-maker, a subject of Denmark, residing at No. 24 Pehlenschlaegersgade, Copenhan, Denmark, have invented new and usefil Improvements in Devices for Automatic Firing of Self-Loading Arms, of which the following is a specification.

- This invention refers to a trigger-mechanism in connection with self-loadin fire-arms,

by means of which the u may e made to act either by 'firinga single shot each time the tri ger is pulled, or by firin automaticall asfi on as thetrigger is acte upon.

n the tfi'awing the lnvention' is shown as applied to a straight pull breech :mechanism breech block is covered and mi t e uall well be applied to other types in' w hicg' the working parts move forwards and backwards. I I I Only those parts of the mechanism are shown which are invention. n

I Figure-1 shows a sideview of the 1gun ready for bein fired withthe breech c osed, and cooked, t e stock being partly left out. Fig, 2 shows the same sideview but with the trigg gar-mechanism ulled for the firing of a single shot and s owing ore the hammer strikmg. Fig. 3 shows the same si eview but withthe trigger-mechanism ulR for automatic firing; the breech-mac anism is shown as entirely open having been pulled'ba'ck as far as 'b e fired, and F1g.- 5 shows the samegsldeview with the same'arran ment'as that of Fig. 4. e triggers are u ed for automatic firing, the hammer the mechanism is still locked.

The trigger-mechanism consists of the trigtriggerring 15 and the front ries a ti'i g'ger-lever 14. The

ages a sear 2. The trig er 1 of w ich cartriglger 1' en,-

an I.

turn 011511118 17 and 18' ed in' stiffening" pieces in e. breech box 3. To the left of the trigger 1.

1 another trigger 4 is arran which turns on the pin 101d which is t into such a shape that itslowei' end with the finger-hook go:- 1. The hear 2 whidh' is'actuated by a rp r mg 1 6 is provided at its lower and rear of a covering piece, but it.

end a shoulder '10, the oblique, corresponding'to the upper surface essential to illustrate the of the stud 8.

' tri not a tered by this. -1 the sear 2 with the stud '12 moves down- .tion between the has een thrown forward, but.

is turned backinto its means of the spring,-so that the stud- 12 is acklof which is acted u on by av the sear reaches down in front of. the.

end with a movable nose 11 the cylindrical-' pin of which is fitted into a hole in the sear m such a manner that it may move forward 5 with an axial perforation in which a stud.

actuated b of the stu minating in ahead or the wedge-piece 6 with an upper oblique face. The spring 23 forces the pin and the wedgea s ring 23 can move, the part perforated, carries an 8, which is prevented from fallin means of a pin. The lower end of t axially movable stu out by he stud 8 is rounded off, while its upper end is oblique. The cover piece 9has at its rear lower face of which is The mechanism works as follows: I

the parts are in the osition shown in lower face of the shoulder 10 1i against the oblique top of the stud 8 the ower end of which rests against the u er-{oblique face of the wedgeiece 6. I it is desired to fire one'single s ot, the

er 1 is brought into the in 2. -'The position of t e' trigger 4 is In pulling the trigger ward, the hammer 13 being thus released so that'itmay strike forwards, and the relaarts is thus arranged that e trigger simultaneously nose 11 whereby these'ar original position b the nose 14 of t releases the sear in front of the rest ofjthe hammerwhenithe mechanism having effected its rear move ment starts forwardto close the breech. releasin '15 will E ring it be to its origina pos tion, while in will then, actuated by the spring again be brought back; beneath the trig r misc.- This owever, been arrangement for-Ha ing has,

formerly *known. If automatic firin is de sired, the trigger 4 is brought into't "e posi piece'rearwards. The breech box 3 has a projection 7 whichbeins 1, the'rest of, the ammer 13 bearing against the stud '12. .while the'oblique' osition' shown On'. the tri er 1 the tri r-s' rin fit g 105 I assing the 'searnose 11 it willforce this atter forward. The scar nose 11 pro ecting beyond the body terso: When 4t being released the will then be carried 50 {sliding on the sear 2. Yet

- wlnch the cover in niovin s5. ,piece 6 k ing, however,

tion shown in Fig. 3. The shape of trig er 4 makes it carry trigger 1 back along with it, and the sear 2 is'moved downwards 1n the same way as before thus'releasing the 5, hammer and firing one shot. At the same time thefront end of the trigger 4 depresses the rounded off rear-end of the wedge-piece 6 whereby this latter is pushed forward, and when the spring 16, after the first shothav- 10 ing been .fired has brought the sear back into its normal position, the wedge-piece Wlll force the stud'S slightly upwards.

When the cover 9, in closing the'mechanism, moves forward, the'shoulder 10 meets. the stud 8 and presses it downwards. This movement-of the stud 8 is transferred through the Wedge-pieoe (which is immovable in an axial direction, its rear-end leaning against the trigger 4,) to the sear which is thus turned downwards whereby the stud 1.2 releases the hammer 13. The latter will 'conse'q'uently again strike forward and another shot is fired immediately after the cover has been brought quite forward and 5 the breech closed. When in consequence of the shot having been fired the mechanism is again opened, the cover slides backwards and the stud 8 is released, so that the sear may again be turned back and the stud 0 place itself in front of'the'haminer as shown in Fig. 3. 'At the forward motion of the cover the gun is again fired and this goes i on as long as the trigger 4 is heldin the position shown. in Fig. 3. On the trigger trigger-spring 15 will move both triggers until they get into the position shown in'Fi ack b its spring into its original position, and when the stud 8 is 40 forced downwards by the forward move ment of the cover it can no longer move thewedge-piece. The gun thus remains cocked and ready for firing. 1

In thearrangement described above the stud 8, the forcing downwards of which.

causes the shot to be fired, is located in the channel of a bod firmly connected with the breech box 3 whi e the corresponding wedge- .piece .6 is arranged so as to be capable of there is nothin to. prevent the intermediate iece', throug orces the sear downwards being movab y fitted to the breech box so that it is brought into such a 55. position that it may enter into action when the trifgger 4 isworked, and be again brought back rom this position and thereby'set out of action when the said trigger'is released.

- -In this casetl'm't part of the sear which is Go acted upon by the intermediate piece,

(the

' wedge-piece) must be fixed tothe rod. 'Figs.

' and show sueha form of constru on.

I The-trigger-mechanism for a 'sin 1e shot is exactly as shown in Figs. 1 to 3, t

locked and cocked.

. 1; the wedge-pieced e wedge-n replaced by a shoulder 20 fixed onto the lefthand side ofthe sear 2.

,The cylindrical stud 8 is fitted into a per-. foration in the movable piece 21, capable of turning on a pivot 22 having its bearing inthe breech frame or receiver. A rod 19 connects the piece 21 to the trigger 4 which is as previously shown,- bcnt'in such a way that when pulled it carries the trigger l'alon'g to the rear.

When the trigger 1 is pulled a single shot .is fired, just as in the form of construction shown in Figs. 1 to 3, the trigger 4, remaining at rest. On pulling the trigger 4, however, into the position shown in Fig. 5, the trigger 1 will also be carried backwards, whereby the hammer, as has been formerly explained, is released and strikes forward, at the same time that the piece 21 together with the stud -8 is turned into the position shown in Fig. 5. The stud 8 will thereby be brought into contact with the shoulder 20, and-it will thus act exactly as in the form of-construction shown in Figs.- 1 to 3. Tl'1e firingwill consequently continue automatically until the tri gear 4 is released. The trig er-sprin' 15- wi 1 then bring both tri gers ack to t eir original position, where ythe p'iece'21 is turned back to the position shown 'inFig. 4,.

and on the cover 9 next moving forward the stud 12 will stand in front of the hammer 13. The mechanism will As mentioned before it is not necessary for using the said arrangem'ent that the breech bolt should be provided with a'cover. There is nothing. to prevent a shoulder corres ond- -ing to the shoulder- 10 of. the cover eing fitted .toany otherpart "of'tli'e mechanism having a forward and backward movement. Neither will it be necessary that both triggers should and it may be easily arranged that only trigbe provided with finger-h k consequently remain ger 1 has a finger-hook, while the trigger 4 I is connected with the trigger 1 by means ofan .interlockin are esired.

I Having now particularly.described and ascertained thenatureof this said invention and in what manner the formed, I declarethat what I claim is;'

same is to be permechanism for automatic" .firln and agaln-released'when single shots 1. In self-loading' 'fire'arms, the combine tion withthebieeehzbolt, and a cover slidin on the breech. frame or .-receiv.er for protecting and working the. breech-"bolt, the said cover being .(provided with a: shoulder, of a acted. onby the said shoulder movable stu on the cover belinwf'ciosed-,=i azeearg a-wed e piece having 1h;sli dingconnection with: t e sear, andcapable-wheit 'z aetive position of or setting itof operation.

seter'lapoi'i bye-aid. movable stud to. -move=the scar, and a trigger for vplaemg'g; said piece n operative position",

the movable stud to said sear to move the latter to release the hammer.

3. In self loading fire arms, the combination with a movable breech bolt provided with a shoulder,'a hammer, a sear provided with means for engaging said hammer, and a trigger for movlng the sear for firing a single shot, of a movable device interposed between the breech and the sear and adapted to be en aged and moved by said shou der, a second carr along with it t e trigger for firin sing e shots, and means controlled by sai second tri ger for transferring the action of said mova 1e device to said sear to move the same to release the hammer.

4. In self loading fire arms, the combination with the hammer, the sear provided on its top' with a stud for engagin the hammer, and the trigger for acting on t e sear to fire single shots, of a body located atone side of the sear and having an axial perforation, a

' stud movable in the perforation of said body and having a projecting portion terminating in a wedge plece having an upper obli ue face, a spring for forcing the stud and we ge piece rearwardly, an axially movable stud extending through a perforated projection trigger ada ted when. pulled to on the breech box of the fire arm, and resting at its lower end on the oblique face of the said wedge piece, and a trigger having a member adapted when the trl ger-is pu led to engage the wedge piece an press 1t forwardly against the tension of its spring, thereby movin the axially movable stud slightly upwar s, and means for engaging the upper end of said stud to depress the same and mgve the sear to release'the hammer.

5. In self loading fire arms, the combination with the hammer, the sear for engaging the hammer, and the trigger for actln on the sear to fire single shots, of an axially movable stud, means for moving the stud axially, and means for causing the stud when moved 0 actv on the sear to move the same to release the hammer.

6. In self loading fire arms, the combinai tion with the breech mechanism, the hammer, and the sprin cont-rolled sear provided with means or engaging the hammer, of a movable device adapted when in action to transfer its movement to the sear, means for moving said device on the closin of the breech mechanism, a trigger, an means for bringing said movable device into action when the trigger is pulled.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

soREN HANSEN BANG.

Witnesses:

P. HOFMAN BANG, EMIL MAimrrzEN. 

